The problem with that is that a client-side software would be required on the DAW that could cause performance issues and\or represent a violation of privacy. No person should have to prove that they are legitimate -- the burden should be on the accuser should have to prove that they are breaking the law.

A desire for privacy does not mean that somebody has something to hide and should not automatically cause suspicion.

I have a question...if music is produced using anauthorized software (e.g. plugins, daw, soft synths) and it can be proven, would the software manufacturer have a legitimate claim to royalties or other compensation based upon the success of the production? To anyone's knowledge, has this ever been tested?

I work in the software industry in real life (feeds my gear habit) and I find this an interesting subject.